got rid of ~status label so that tactics can now be applied partially,

[helm.git] / helm / ocaml / tactics / eliminationTactics.ml

diff --git a/helm/ocaml/tactics/eliminationTactics.ml b/helm/ocaml/tactics/eliminationTactics.ml
index cd401a2ec94cdaa66a0200c3bb516907b9ef3460..29aa1c4f1ed5157aea052a7f37f34946232745ce 100644 (file)
--- a/helm/ocaml/tactics/eliminationTactics.ml
+++ b/helm/ocaml/tactics/eliminationTactics.ml
@@ -36,7 +36,8 @@ let warn s =
 
 
 (*
-let induction_tac ~term ~status:((proof,goal) as status) =
+let induction_tac ~term status =
+  let (proof, goal) = status in
   let module C = Cic in
   let module R = CicReduction in
   let module P = PrimitiveTactics in
@@ -51,19 +52,19 @@ let induction_tac ~term ~status:((proof,goal) as status) =
                        ~tactic:(T.then_ ~start:(VariousTactics.generalize_tac ~term) (* chissa' se cosi' funziona? *)
                        ~continuation:(P.intros))
              ~continuation:(P.elim_intros_simpl ~term)
-             ~status
+             status
 ;;
 *)
 
 
-let elim_type_tac ~term ~status =
+let elim_type_tac ~term status =
   let module C = Cic in
   let module P = PrimitiveTactics in
   let module T = Tacticals in
    T.thens
     ~start: (P.cut_tac term)
     ~continuations:[ P.elim_intros_simpl_tac ~term:(C.Rel 1) ; T.id_tac ]
-    ~status
+    status
 ;;
 
 
@@ -130,7 +131,8 @@ let call_back uris =
 ;;
 *)
 
-let decompose_tac ?(uris_choice_callback=(function l -> l)) term ~status:((proof,goal) as status) =
+let decompose_tac ?(uris_choice_callback=(function l -> l)) term status =
+  let (proof, goal) = status in
   let module C = Cic in
   let module R = CicReduction in
   let module P = PrimitiveTactics in
@@ -174,7 +176,8 @@ let decompose_tac ?(uris_choice_callback=(function l -> l)) term ~status:((proof
           (* N.B.: due to a bug in uris_choice_callback exp_named_subst are not significant (they all are []) *)
          uris_choice_callback (make_list termty) in
 
-        let rec elim_clear_tac ~term' ~nr_of_hyp_still_to_elim ~status:((proof,goal) as status) =
+        let rec elim_clear_tac ~term' ~nr_of_hyp_still_to_elim status =
+         let (proof, goal) = status in
          warn ("nr_of_hyp_still_to_elim=" ^ (string_of_int nr_of_hyp_still_to_elim));
          if nr_of_hyp_still_to_elim <> 0 then
           let _,metasenv,_,_ = proof in
@@ -191,7 +194,8 @@ let decompose_tac ?(uris_choice_callback=(function l -> l)) term ~status:((proof
                       ~start:(P.elim_intros_simpl_tac ~term:term')
                       ~continuation:(
                         (* clear the hyp that has just been eliminated *)
-                        (fun ~status:((proof,goal) as status) -> 
+                        (fun status -> 
+                          let (proof, goal) = status in
                           let _,metasenv,_,_ = proof in
                            let _,context,_ = CicUtil.lookup_meta goal metasenv in
                             let new_context_len = List.length context in   
@@ -203,18 +207,18 @@ let decompose_tac ?(uris_choice_callback=(function l -> l)) term ~status:((proof
                                    then begin prerr_endline ("%%%%%%% no clear"); T.id_tac end
                                    else begin prerr_endline ("%%%%%%% clear " ^ (string_of_int (new_nr_of_hyp_still_to_elim))); (S.clear ~hyp:(List.nth context (new_nr_of_hyp_still_to_elim))) end)
                                 ~continuation:(elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim)
-                                ~status
+                                status
                         ))
-                      ~status
+                      status
               | _ ->
                    let new_nr_of_hyp_still_to_elim = nr_of_hyp_still_to_elim - 1 in 
                     warn ("fail; hyp=" ^ (string_of_int new_nr_of_hyp_still_to_elim));
-                    elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim ~status
+                    elim_clear_tac ~term':(C.Rel new_nr_of_hyp_still_to_elim) ~nr_of_hyp_still_to_elim:new_nr_of_hyp_still_to_elim status
          else (* no hyp to elim left in this goal *)
-          T.id_tac ~status
+          T.id_tac status
 
         in
-         elim_clear_tac ~term':term ~nr_of_hyp_still_to_elim:1 ~status
+         elim_clear_tac ~term':term ~nr_of_hyp_still_to_elim:1 status
 ;;